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首页> 外文期刊>Energy Conversion & Management >Experimental and numerical investigation for improving the thermal performance of a microencapsulated phase change material plasterboard
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Experimental and numerical investigation for improving the thermal performance of a microencapsulated phase change material plasterboard

机译：改善微胶囊相变材料石膏板热性能的实验和数值研究

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The energy storage in buildings is a significant means for an optimal management of thermal energy. The use of phase change materials in a building envelope can improve heat storage capacity and the thermal behavior of the wall. However, the small thermal conductivity of the phase change materials slows down the process of heat absorption and release. The present study suggests a new technical solution for improvement of thermal behavior of a phase change material plasterboards. It consists of perforating the panel with several small holes yielding a greater contact surface area with the surrounding air. This passive enhancement technique is implemented experimentally and numerically to check its performance. Results show that the perforated panels produces an augmentation in heat absorption and release. The average increase was 100% for heat absorption and 175% for heat release as compared to a standard panel without holes. In addition, a perforated panel with a given thickness can absorb heat as much as a standard panel three to four times thicker. Furthermore, it was found that the absorbed and released heat flux values have a direct relationship with the ratio of the panel thickness to the holes spacing.
机译：建筑物中的能量存储是优化热能管理的重要手段。在建筑物围护结构中使用相变材料可以提高储热能力和墙的热性能。然而，相变材料的小的导热率减慢了吸热和释放的过程。本研究提出了一种新的技术解决方案，用于改善相变材料石膏板的热性能。它包括在面板上打几个小孔，与周围空气接触面积更大。这种无源增强技术是通过实验和数字方式实施的，以检查其性能。结果表明，带孔的面板增加了热吸收和释放。与不带孔的标准面板相比，吸热平均增加了100％，放热平均增加了175％。另外，具有给定厚度的多孔板可以吸收的热量是标准板的三到四倍。此外，发现吸收和释放的热通量值与面板厚度与孔间距的比率具有直接关系。

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